Improvement in windmills



e UNITED STATES PATENT OFFICE.

ARNOLD DE IVITT, OF BROOKLYN, NENV YORK, ASSIGNOR TO HIMSELF, JOHN WIARDA, AND J. N. H. DE WITT, OF SAME PLACE.

IMPROVEMENT lN WINDMILLS.

Specification forming part of Letters Patent No. 29,034, dated July 3, 1860.

To all whom it may concern:

. Be it known that I, ARNOLD DE IVITT, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Vindmill; and I do hereby declare that the following is a full. clear, and exact description of the same,`reference being had to the accompanying drawings, forming a part of this specification, in which-- Figure 1 represent-s a horizontal section of my invention, the line x 0c, Fig. 3, indicating the plane of section. Fig. 2 is a plan or top view of the same. Fig. 3 is a transverse vertical section of the blinds for regulating' the action of the wind on the revolving wheel, taken in the plane indicated by the line y y, Fig. 1.

Similar letters of reference in the three views indicate corresponding parts.

This invention consists in arranging in a rotary frame a series of fans, to which a rotary motion is imparted by a stationary cogwheel in the center of said revolving frame and gearing into corresponding cog-wheels on the ends of the rotary fans, the whole being inclosed in a round or polygonal scroll with a spout to conduct the wind to the fans in such a manner that a light, simple, and powerful wind-wheel is produced.

To enable those skilled in the art to make and use my invention, I will proceed to describe its construction and operation with reference to the drawings.

A series of revolving fans A are arranged in a frame B, which is firmly attached to a vertical rotary shaft C. Each of the fans is attached to an arbor a, which has its bearings in the bottom plate b and in the upper cross-bars c of the frame B, and secured to the upper ends of said arbors are the cogwheels d, which gear into the stationary cogwheel e. rlhis cog-wheel is rigidly attached to the timbers f, that form the top of the scroll D, which surrounds the frame B. lSaid scroll is irmly secured to a ring g, which rotates freely on friction-rollers h, that have their bearings in a ring c', which travels around on a circular wayj. Standards k support this way at any desirable height above the ground, and timbers Z,which run diametrically through the center of this way, form the bearings for the main shaft C. The upper end of this shaftpasses loosely through the center of the stationary cog-wheel c and through the timbers f in the top of the scroll D, and its lower end extends through the bottom plate b of the rotary frame B, and it bears a pulley or band wheel from which the motion of the wind-wheel is transmitted to the desired spot. The scroll D is open on one side, and it isset against the wind by means of a toothed r1m m, which is firmly attached to the ring g at its bottom, and which is operated by a pinion n on an upright shaft o, to which motion is imparted by a hand-wheel p.

The wind is admitted to the revolving fans through a spout E, attached to the side of the scroll and provided with a series of slats q, that turn on tenons r in the side of the spout. These slats are to be operated by a governor that may be placed on the top of the machine, so that if the wheel turns any quicker than desirable the slats are closed or partly closed and the speed of the wheel is checked.

The peculiar advantage of my invention is contained in the revolving fans,which on being struck by the wind, as shown in Fig. 1, (where the current of the wind is indicated by red arrows,) begin to turn around their own axis, thereby producing a rotary motion of the frame C by the action of the gearwheels d on the stationary cog-wheel e; and at the same time the wind in striking the fans has a tendency of causing a rotary motion of the frame O or of the wind-wheel in the direction of the arrow marked thereon in Fig. 1, so that a double power is exerted on the wind-wheel, one by the independent rotary motion of the fans caused by the action of the wind on each successive wing of said fans, and one by the direct action of the wind in each of the fans as they pass before the spout independent from their peculiar rotary motion. From these reasons I obtain a better effect with my wheel than has been obtained with any other wheel heretofore used; and I am enabled to do a large amount of work with a comparatively small wheel, and a very light breeze will be able Jto-produce considerable effect.

My wheel can be made cheap, and it can be erected in any desired locality, and all its parts are so arranged that they cannot easily together with an adjustable scroll D, subget out of repair. stantially in the manner and for the purpose Having .thus fully described my invention, specified. What I olann as new, and desne to secure by ARNOLD DE WITT Letters Patent, is-

The employment of a series of revolving 'Vitnesses: fans A, with gear-Wheels CZ, arranged around B. GIROUXE, a Stationary oog-Wheel e in a rotary frame B, M. M. LIVINGSTON. 

